NGC 3729

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NGC 3729
NGC3729-hst-R658GB814.jpg
NGC 3729 by Hubble Space Telescope
Observation data (J2000 epoch)
Constellation Ursa Major
Right ascension 11h 33m 49.3s [1]
Declination 53° 07′ 32″ [1]
Redshift 1,060 ± 1 km/s [1]
Distance 65.7 ± 4.8 Mly (20.2 ± 1.5 Mpc) [1]
Apparent magnitude  (V)11.0 [2]
Characteristics
Type SB(r)a pec [1]
Apparent size  (V)2.8′ × 1.8′ [1]
Other designations
UGC 6547, CGCG 268-051, MCG +09-19-117, PGC 35711 [1]

NGC 3729 is a barred spiral galaxy located in the constellation Ursa Major. It is located at a distance of circa 65 million light years from Earth, which, given its apparent dimensions, means that NGC 3729 is about 60,000 light years across. It was discovered by William Herschel on April 12, 1789. [3]

NGC 3729 has a bright nucleus embedded in a bar which measures 0.5 x 0.1 arcminutes. At the end of the bar lies a ring with knots. The outer part of the galaxy is formed by an asymmetric faint nebulosity with condensations. [4] It is possible that the condensation is a disturbed satellite galaxy. [5] In the centre of NGC 3729 is predicted to lie an intermediate-mass black hole, whose mass is estimated to be between 4 and 400 thousands M☉ (104.6 ± 1.0M☉) based on Ks-band bulge luminosity. [6] The galaxy has an inner ring which emits in far ultraviolet and H-alpha, which are considered to be markers of recent star formation activity. [7]

NGC 3729 is member of the M109 Group [8] which is part of the south Ursa Major groups, part of the Virgo Supercluster. [9] It forms a pair with NGC 3718, which lies 11.5 arcminutes to the west. [4] It is possible the two galaxies interacted in the past. [10]

Although no supernovae have been observed in NGC 3729 yet, a luminous red nova, designated AT 2018hso, was discovered on 31 October 2018 (type LRN, mag. 19.4). [11]

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<span class="mw-page-title-main">NGC 708</span> Galaxy in the constellation Andromeda

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<span class="mw-page-title-main">NGC 3893</span> Galaxy in the constellation Ursa Major

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<span class="mw-page-title-main">NGC 2336</span> Galaxy in the constellation Camelopardalis

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<span class="mw-page-title-main">NGC 5982</span> Galaxy in the constellation Draco

NGC 5982 is an elliptical galaxy located in the constellation Draco. It is located at a distance of circa 130 million light years from Earth, which, given its apparent dimensions, means that NGC 5982 is about 100,000 light years across. It was discovered by William Herschel on May 25, 1788.

<span class="mw-page-title-main">NGC 3585</span> Galaxy in the constellation Hydra

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<span class="mw-page-title-main">NGC 5363</span> Galaxy in the constellation Virgo

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<span class="mw-page-title-main">NGC 765</span> Galaxy in the constellation Aries

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<span class="mw-page-title-main">NGC 2273</span> Galaxy in the constellation Lynx

NGC 2273 is a barred spiral galaxy located in the constellation Lynx. It is located at a distance of circa 95 million light years from Earth, which, given its apparent dimensions, means that NGC 2273 is about 100,000 light years across. It was discovered by Nils Dunér on September 15, 1867.

<span class="mw-page-title-main">NGC 4561</span> Galaxy in the constellation Coma Berenices

NGC 4561 is a barred spiral galaxy in the constellation Coma Berenices. It was discovered by German-British astronomer William Herschel on April 13, 1784. This galaxy is located at a distance of 82 ± 14 million light-years (25.2 ± 4.3 Mpc) from the Milky Way, and is a member of the Virgo Cluster of galaxies. It is 13th magnitude with an angular size of 1.5′.

<span class="mw-page-title-main">NGC 5728</span> Spiral galaxy in the constellation Libra

NGC 5728 is an active barred spiral galaxy located 146 million light years away in the southern constellation of Libra. It was discovered on May 7, 1787 by William Herschel. The designation comes from the New General Catalogue of J. L. E. Dreyer, published in 1888. It has an apparent visual magnitude of 13.40 and spans an angle of 3.4 arcminutes. The galaxy shows a red shift of 0.00935 and has a heliocentric radial velocity of 2,803 km/s. It has an estimated mass of 72 billion times the mass of the Sun and stretches around 30 kpc across.

<span class="mw-page-title-main">NGC 3998</span> Galaxy in the constellation of Ursa Major

NGC 3998 is a lenticular galaxy located in the constellation Ursa Major. It was discovered on April 14, 1789, by the astronomer William Herschel. At a distance of 45 million light-years, it is located relatively nearby, making it a well-studied object.

<span class="mw-page-title-main">NGC 5506</span> Galaxy in the constellation of Virgo

NGC 5506 is a spiral galaxy located in the constellation Virgo. It is located at a distance of about 75 million light years from Earth, which, given its apparent dimensions, means that NGC 5506 is about 80,000 light years across. It was discovered by William Herschel on April 15, 1787. It is a Seyfert galaxy.

<span class="mw-page-title-main">NGC 4253</span> Galaxy in the constellation of Coma Berenices

NGC 4253 is a barred spiral galaxy located in the constellation Coma Berenices. It is located at a distance of about 185 million light years from Earth, which, given its apparent dimensions, means that NGC 4253 is about 65,000 light years across. It was discovered by William Herschel on February 3, 1788. It is a Seyfert galaxy.

<span class="mw-page-title-main">NGC 3583</span> Galaxy in the constellation Ursa Major

NGC 3583 is a barred spiral galaxy located in the constellation Ursa Major. It is located at a distance of circa 90 million light years from Earth, which, given its apparent dimensions, means that NGC 3583 is about 85,000 light years across. It was discovered by William Herschel on February 5, 1788.

References

  1. 1 2 3 4 5 6 7 "NASA/IPAC Extragalactic Database". Results for NGC 3729. Retrieved 2019-01-18.
  2. ↑ "Revised NGC Data for NGC 3729". spider.seds.org. Retrieved 25 November 2018.
  3. ↑ NGC 3729 cseligman.com
  4. 1 2 de Vaucouleurs, Gerard Henri; de Vaucouleurs, Antoinette; Shapley, Harlow (1964). Reference catalogue of bright galaxies. Austin: University of Texas Press. Bibcode:1964rcbg.book.....D.
  5. ↑ Morales, Gustavo; Martínez-Delgado, David; Grebel, Eva K.; Cooper, Andrew P.; Javanmardi, Behnam; Miskolczi, Arpad (29 June 2018). "Systematic search for tidal features around nearby galaxies". Astronomy & Astrophysics. 614: A143. arXiv: 1804.03330 . doi:10.1051/0004-6361/201732271. S2CID   118981195.
  6. ↑ Graham, Alister W.; Scott, Nicholas (1 February 2013). "The MBH-lspheroid relation at high and low masses, the quadratic growth of black holes, and intermediate-mass black hole candidates". The Astrophysical Journal. 764 (2): 151. arXiv: 1211.3199 . Bibcode:2013ApJ...764..151G. doi:10.1088/0004-637X/764/2/151. S2CID   96428441.
  7. ↑ Comerón, S. (9 July 2013). "Inner rings in disc galaxies: dead or alive". Astronomy & Astrophysics. 555: L4. arXiv: 1306.4515 . Bibcode:2013A&A...555L...4C. doi:10.1051/0004-6361/201321983. S2CID   56144824.
  8. ↑ Makarov, Dmitry; Karachentsev, Igor (21 April 2011). "Galaxy groups and clouds in the local (z~ 0.01) Universe". Monthly Notices of the Royal Astronomical Society. 412 (4): 2498–2520. arXiv: 1011.6277 . Bibcode:2011MNRAS.412.2498M. doi: 10.1111/j.1365-2966.2010.18071.x . S2CID   119194025.
  9. ↑ "The Ursa Major Groups". www.atlasoftheuniverse.com.
  10. ↑ Markakis, K.; Dierkes, J.; Eckart, A.; Nishiyama, S.; Britzen, S.; García-Marín, M.; Horrobin, M.; Muxlow, T.; Zensus, J. A. (20 July 2015). "Subaru and e-Merlin observations of NGC 3718". Astronomy & Astrophysics. 580: A11. arXiv: 1504.03691 . doi:10.1051/0004-6361/201425077. S2CID   56022608.
  11. ↑ Transient Name Server entry for AT 2018hso. Retrieved 10 November 2023.
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